[Centos] rebuilding errata src rpms

I am running centos-3 and have a question about rebuilding errata srpms from redhat.

Do all i have to do is run

rpmbuild --rebuild filename.src.rpm

to rebuild the rpm for use on my centos system?

I am talking about the src.rpms that dont have a a filename change for example the rpm file name change for kernels, etc that add c0 to the rpm filename

I am assuming that if the src.rpm filename from redhat errata page matches that of the rpm in centos that there were no .spec file changes and that i can run the above command to rebuild the rpm or any other src.rpm and then install the updated rpm on my system.